I've since learned that
http://www.lormarlogic.com has a link to a free relay service using the AIM feature on our Sidekick. If you WANT TTY capabilities it is $5 or so a month. I've used them once before and it works well.
Also would like to know in what way do you find it the best way to carry the SK? I have their leather case but can't always pick up the vibrations too well.
John